How to Check and Upgrade Flutter and Dart Versions

Guide to Checking and Upgrading Flutter and Dart Versions

This guide will take you through the steps to check and upgrade Flutter and Dart versions on your system.

1. Checking Flutter and Dart Versions

1-1. Checking Flutter Version

To find out the version of Flutter installed on your system, execute the following command in your terminal:

flutter --version

The output will show the Flutter SDK Version.

1-2. Checking Dart Version

To find out the version of Dart installed on your system, execute the following command:

dart --version

The output will show the Dart SDK version.

2. Upgrading Flutter and Dart Versions

2-1. Upgrading Flutter Version

To upgrade Flutter, run the following command in the terminal:

flutter upgrade

Upon the execution of the command, Flutter will be upgraded to the latest version.

2-2. Upgrading Dart Version

Upgrading Dart separately is not necessary as Dart gets upgraded along with Flutter. However, for Dart installed separately, follow these steps:

1. Update Dart to the latest version with dart upgrade.
2. For Chocolatey users, update Dart to the latest version with choco upgrade dart-sdk.
3. If you're using Homebrew, update Dart to the latest version with brew upgrade dart.

Please note that it is recommended to use the Dart version that gets upgraded along with Flutter.

3. Checking Flutter and Dart Versions Used in Your Project

3-1. Checking Flutter Version Used in Your Project

To check the version of Flutter used in your project, open the pubspec.yaml file and look for the dependencies section. Find the flutter entry, which indicates the version being used:

dependencies:
  flutter:
    sdk: flutter

If no specific Flutter version is mentioned, the system's latest installed Flutter version will be used in the project.

3-2. Checking Dart Version Used in Your Project

To check the Dart version used in your project, open the pubspec.yaml file and look for the environment section. Find the dart entry as shown:

environment:
  sdk: ">=2.12.0 <3.0.0"

In this example, the Dart version is set to be greater than or equal to 2.12.0 and less than 3.0.0. This value specifies the range of Dart versions that can be used in the project. It allows you to write code that is compatible only with specific Dart versions.

If no specific Dart version is mentioned, the system's latest installed Dart version will be used in the project.

4. Upgrading Flutter and Dart Versions Used in Your Project

4-1. Upgrading Flutter Version Used in Your Project

To upgrade the Flutter version used in your project, first upgrade the Flutter installed on your system. Run the following command:

flutter upgrade

Next, open the pubspec.yaml file of your project and modify the dependencies section, specifically the flutter entry, to match the upgraded version. After modifying, update the packages used in your project by running:

flutter pub get

4-2. Upgrading Dart Version Used in Your Project

To upgrade the Dart version used in your project, open the pubspec.yaml file and modify the environment section. Update the sdk version to the desired Dart version. For example, modify it as follows:

environment:
  sdk: ">=2.14.0 <3.0.0"

After modifying, update the packages used in your project by running:

flutter pub get

By following these methods, you can upgrade the Flutter and Dart versions used in your project. However, before proceeding with the upgrade, ensure that your code is compatible with the new SDK versions and make necessary adjustments.

You now know how to check and upgrade the Flutter and Dart versions used in your project. As new versions get released, regularly check and upgrade the versions for each project when necessary.